Laundry blue (if you can find it) will take that down in half an hour. Wet the end of the block and rub the sting.
And if you can find some, send me a block. It's been over a decade since I last saw any.
Ouch... your poor poorly little un Ku... give him a cuddle from me!
What's a yellow jacket? *glad not got them in blighty*
It's the solid cube I was told. It works whenever it's still a sting, so I'd presume anytime the hole's still open.
I've got yellowjackets all over and they never seem to bother with me. I've also got these neat digger wasps about the size of a small cricket, and these huge gun metal blue mothers that appear to be as dumb as a sack of hammers.